Transition-Metal-Doped RuIr Bifunctional Nanocrystals for Overall Water Splitting in Acidic Environments

Advanced Materials
Jieqiong ShanShi-Zhang Qiao

Abstract

The establishment of electrocatalysts with bifunctionality for efficient oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in acidic environments is necessary for the development of proton exchange membrane (PEM) water electrolyzers for the production of clean hydrogen fuel. RuIr alloy is considered to be a promising electrocatalyst because of its favorable OER performance and potential for HER. Here, the design of a bifunctional electrocatalyst with greatly boosted water-splitting performance from doping RuIr alloy nanocrystals with transition metals that modify electronic structure and binding strength of reaction intermediates is reported. Significantly, Co-RuIr results in small overpotentials of 235 mV for OER and 14 mV for HER (@ 10 mA cm-2 current density) in 0.1 m HClO4 media. Therefore a cell voltage of just 1.52 V is needed for overall water splitting to produce hydrogen and oxygen. More importantly, for a series of M-RuIr (M = Co, Ni, Fe), the catalytic activity dependence at fundamental level on the chemical/valence states is used to establish a novel composition-activity relationship. This permits new design principles for bifunctional electrocatalysts.

References

Feb 21, 2007·Nature Materials·Vojislav R StamenkovicNenad M Markovic
Mar 18, 2008·Nature Materials·Selim AlayogluBryan Eichhorn
Mar 23, 2011·Journal of the American Chemical Society·Ifan E L StephensIb Chorkendorff
Apr 4, 2013·Chemical Society Reviews·Federico Calle-VallejoAliaksandr S Bandarenka
Mar 29, 2014·Physical Chemistry Chemical Physics : PCCP·Niels Bendtsen HalckJan Rossmeisl
Sep 10, 2014·Angewandte Chemie·Kripasindhu SardarRichard I Walton
Feb 13, 2015·Chemical Society Reviews·Yan JiaoShi Zhang Qiao
Oct 27, 2015·Journal of the American Chemical Society·Jun LiGengfeng Zheng
Dec 25, 2015·Physical Chemistry Chemical Physics : PCCP·V PfeiferR Schlögl
May 5, 2017·The Journal of Physical Chemistry Letters·Victor FungDe-En Jiang

❮ Previous
Next ❯

Citations

Jul 3, 2019·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Xin BoChuan Zhao
Oct 15, 2019·Small·Ming-Chi ShihChun-Hu Chen
Jun 26, 2020·Advanced Materials·Longsheng ZhangHuisheng Peng
Sep 22, 2019·Materials·Hai-Bin WangXi-Wen Du
May 19, 2020·Advanced Materials·Xiaoju CuiDehui Deng
Oct 25, 2020·Nature Communications·Shaoyun HaoXingwang Zhang
Apr 22, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Lu AnJunliang Zhang
Aug 20, 2019·Journal of the American Chemical Society·Hua Bing TaoBin Liu
Feb 6, 2020·Nano Letters·Fang LuoWeiwei Cai
Jul 28, 2020·ACS Applied Materials & Interfaces·Yahui WangXingwang Zhang

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.